<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>Debug</title>
    <style>
body{
    font-family: Arial;
    font-size: 12px;
}
body>ul>li, pre>ul>li{
    list-style: none;
    margin: 2px;
    border: 1px solid gray;
    padding: 10px;
    width: 100%;
}
li.info{
    background: #ccffcc;
}
li.error{
    background: #ffcccc;
}
    </style>
  </head>

  <body>